Water purifying canteen



FIG. 1 is a top, front, perspective view of a water purifying canteen, showing my new design, the top, rear perspective being a mirror image thereof;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a water purifying canteen, as shown and described. 